Improvement in tuning-pins for musical instruments



UNITED STATES PATENT OFFICE.

SAMUEL CLARKE, OF NET YORK, N. Y.

` IMPROVEMENT IN TUNING-PINS FOR MUSICAL INSTRUMENTS.

Specification forming part of Letters Patent No. 31,5S9, dated March 5, 186i.

To all whom, t may concern:

Be it known that I, SAMUEL CLARKE, of the city and State of New York, have invented a new and Improved Tuning-Pin forStringed Musical Instruments; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters ot` reference marked thereon.

Figure l shows a perspective view; Fig. 2, a vertical section; Fig. 3, a plan.

The nature of theinventiou consists in s0 constructing the pin as to increase its power of resistance to the recoiling strain of the spring, andA thereby to keep the instrument longer in tune.

Letters E sho7 the part of the pin upon which is Wound the end ot the string which it is :intended to tune.

From letters C to letters D is the part of the pin which enters the wrest-plank, or the part ot the instrument intended for its reception, and which by adhesiveness to its bearings prevents the pin from recoiling when the string` is tightened upon it at letter E. This part of the pin from letters C to letters D is made either wholly or in part of a larger diameter than at let-ter E, as sho wn at letter A, wherebyan increased leverage is obtained to resist the recoiling strain of Jthe string, and an increased surface to resist the pressure of the pin, and to still further increase the resisting-power of the pin to the reeoiling strain of the string the periphery of the enlarged dia-meter, letterA, is roughenod orcorrugated as shown at letters B.

I construct the piu in two parts, either by casting the enlarged diameter, letters A, upon the shafts, or by drilling or punching it and then driving it tightly upon the saine.

The principle of action of the construction is that the enlarged diameter of the pin, as shown at letters A, by its increased leverage and ro u ghen ed periphery gives greater power to resist the recoiliug strain ot the string, and also its increased su rface a moreA durable bear ing against its abutment.

That I claim as my. invention, and desire to secure by Letters Patent, is-

A tuning-pin for stringedinstruments when the same is constructed in the manner substantially as above described.

SAMUEL CLARKE.

Witnesses:

GEo. PEY'roN, L. ODELL. 

